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Hydrodynamic cavitation as a novel pretreatment approach for bioethanol production from reed

Author:
Kim, Ilgook, Lee, Ilgyu, Jeon, Seok Hwan, Hwang, Taewoon, Han, Jong-In
Source:
Bioresource technology 2015 v.192 pp. 335-339
ISSN:
0960-8524
Subject:
alkali treatment, biomass, ethanol, ethanol production, fermentation, glucose, hydrodynamics, lignocellulose, saccharification, sodium hydroxide
Abstract:
In this study, hydrodynamic cavitation (HC) was employed as a physical means to improve alkaline pretreatment of reed. The HC-assisted alkaline pretreatment was undertaken to evaluate the influence of NaOH concentration (1–5%), solid-to-liquid ratio (5–15%), and reaction time (20–60min) on glucose yield. The optimal condition was found to be 3.0% NaOH at solid-to-liquid (S/L) ratio of 11.8% for 41.1min, which resulted in the maximum glucose yield of 326.5g/kg biomass. Furthermore, simultaneous saccharification and fermentation (SSF) was conducted to assess the ethanol production. An ethanol concentration of 25.9g/L and ethanol yield of 90% were achieved using batch SSF. These results clearly demonstrated HC system can be indeed a promising pretreatment tool for lignocellulosic bioethanol production.
Agid:
5366270